PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-11:43:00
G01     118.4          18.4                3.5 +/-    1.21       8.0 +/-    1.21  0.040 / 0.040
G07     82.9           66.0                4.4 +/-    0.31       4.8 +/-    0.31  0.030 / 0.030
G08     44.1           28.9                1.6 +/-    0.57       2.8 +/-    0.57  0.080 / 0.160
G09     175.1          23.0                3.8 +/-    1.01       7.7 +/-    1.01  0.080 / 0.160
G11     104.0          40.2                5.8 +/-    0.54       8.4 +/-    0.54  0.140 / 0.280
G13     317.2          20.3                0.8 +/-    3.60       1.8 +/-    3.60  0.160 / 0.270
G17     201.3          26.7                4.1 +/-    0.86       7.7 +/-    0.86  0.140 / 0.390
G18     92.7           21.1                3.5 +/-    1.11       7.4 +/-    1.11  0.090 / 0.380
G28     293.7          57.5                2.9 +/-    0.84       3.3 +/-    0.84  0.110 / 0.210
G30     344.5          68.1                1.7 +/-    0.80       1.8 +/-    0.80  0.100 / 0.240